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Location Denmark, Ringkøbing Amtskommune,Viborg Amtskommune
Central coordinates 8o 50.00' East  56o 30.00' North
IBA criteria C2
Area 830 ha
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description Freshwater lakes in an area of heathland now largely converted to conifer plantations; some patches of heathland and tiny remnants of natural Quercus forest remain.

Key Biodiversity Numbers of passage and wintering ducks have declined, probably due to decreasing water quality. Mergus merganser and Anas crecca were recorded in internationally important numbers (meeting current IBA criterion B1i) in 1983.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Whooper Swan Cygnus cygnus winter  1988  145 individuals  C2  Least Concern 

IBA Monitoring

2010 not assessed favourable not assessed
Good - based on reliable and complete / representative data

Botaurus stellaris Eurasian Bittern 3 3 breeding pairs 100 favourable
Lanius collurio Red-backed Shrike 2 2 breeding pairs 100 favourable
Pandion haliaetus Osprey 1 1 breeding pairs 100 favourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Flyndersoe and Stubbergaard Soe Major Conservation Area 1,670 protected area contains site 830  


IUCN habitat Habitat detail Extent (% of site)
Shrubland Heathland  5%
Wetlands (inland) Rivers and streams; Standing freshwater  90%
Artificial - terrestrial Forestry plantations  5%

Land use

Land-use Extent (% of site)
nature conservation and research 100%
forestry 5%

Protection status National Partial International High830 ha of IBA covered by Special Protection Area (Flyndersø and Skalle Sø, 830 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Flyndersø and Stubbergård Lake. Downloaded from on 25/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife